\documentclass[11pt]{article} %A4纸

\usepackage{amssymb,latexsym,amsmath,amsfonts} \usepackage{ctex, tasks}

\newcommand{\LeaveBlank}{0} %输出A4文档
%\newcommand{\LeaveBlank}{1} %输出A4文档，而且预留做题空白
\newcommand{\mynewpage}{\ifnum\LeaveBlank=1 \newpage \fi }

\addtolength{\textheight}{4.5cm}\addtolength{\voffset}{-2.4cm}\addtolength{\textwidth}{3.7cm}\addtolength{\hoffset}{-2.2cm}   
\usepackage{titling}\setlength{\droptitle}{-2cm} 

\title{高等代数二作业4} \author{王立庆（2024级数学与应用数学1班）} \date{2025年3月24日 - 30日} %\date{\today}

\input{LAProblemSetD} % 载入题库文件 

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\begin{document}
\maketitle 

\begin{abstract}
1. \DABSA （\DABSAa \DABSAb）

2. \DABSB （\DABSBa \DABSBb \DABSBc）
\end{abstract}

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\section{讲解}
\begin{enumerate}\ifnum\LeaveBlank=1 \itemsep3cm \fi 
\item  \DTA  
\item  \DTB  
\item  \DTC    \mynewpage
\item  \DTD   
\item  \DTE   
\item  \DTF   
\item  \DTG   \mynewpage
\item  \DTH    
\item  \DTI   
\item  \DTJ   
\item  \DTK   
\item  \DTL   
\end{enumerate}

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\mynewpage

\section{习题}
\begin{enumerate}\ifnum\LeaveBlank=1 \itemsep5cm \fi 
\item  \DEA 
\item  \DEB 
\item  \DEC  \mynewpage
\item  \DED 
\item  \DEE 
\item  \DEF 
\end{enumerate}

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\end{document}

